Marking cutter for tree lamps



Aug. 28, 192 1,682,416

L. L. RAYMCND MARKING CUTTER FOR TREE LAMPS Patented Aug. 28, 1928.

UNITED STATES LAMBERT L. RAYMOND, F MINNEAPOLZIS, MINNESOTA, ASSIGNOR TOBRODERICK- SON-RAYMOND COMPANY, OF MINNEAPOLIS, MINNESOTA. A CORPORATIONOF MINNESOTA.

MARKING CUTTER- FOB- TREE LAMPS.

Application filed November 22, 1926. Serial No. 150,123.

This'invention relates to a device for marl:- ing electric light bulbs.and while the inven tion is applicable to la'mp bulbs used for variouspurposes, it particularly is designed for l bulbs used in decorativework such as Christmas tree decoration. One form ofChristinas treedecoration or lighting which has been developed by applicant is to havereflectors with radially spaced or circumterentially l0 spaced zonesthereon. The bulbs used in connection with such reflectors have designsthereon which are arranged in proper relation to the zones on thereflectors. Very beautiful decorative effects are thus produced.

These designs or markings on the lamp bulbs are often made by a devicewhich cuts or scrapes away the coating. usually used on the bulb. It isdesirable, therefore, to have a simple and easily operated device bymeans of which designs may readily be made on the lamp bulbs.

It is an object of this invention. therefore, to provide a very simpleand cfiicient device for producing the designs or marks on the lampbulbs.

It is a further object of the invention to provide such a device havinga plurality of spaced teeth adapted to surround the bulb whereby thebulb and device may relatively be moved to produce the design.

It is another object of the invention to provide such, a device made ofplate material having an opening therethrouszh and having a plurality of'circumferentially spaced teeth 5 projecting; inwardly from the edge ofsaid opening.

It is still another object of the invention to provide such a devicecomprising: a tool made of plate material havinc: a substantiallycircular opening therethrough. the edge of said opening having outwardlyextending: circumferentially. spaced recesses formed therein andinwardly extending teeth circumferent-ially spaced and disposedrespcctively between said recesses.

These and other objects and advantages of i the invent-ion'will be fullyset forth in the following description made in connection with theaccompanying drawings. in which like reference ch aracters refer tosimilar parts throughout the several views and in which Fig. 1 is aviewin horizontal cross section. showing a lamp bulb with markingsthereon Fig. 3.

in operative position relative to the reflectori Fig. 2 is a plan viewof one form of the device;

Fig. 3 is a central device shown in Fig. 2

Fig. 4 is a plan view of'a modified form of the device; p i

Fig. 5 is a central vertical section of the device shown in 4';

Fig. 6 is a the device;

Fig- 7 is a central vertical section on line 7-7ofFig.6; Fig. 8 is alsoa plan view of a modified form; Y

Fig. 9 is a plan view of a still further modified form; v f Fig. 10 is aplan view ofanother modificaion: Fig. 11 is partly an edge view andpartly a central vertical sectionof the device shown in Fig. 10.

plan'view of another form of Fig. 12 is a plan view of another modifiedform ofthe device; 1

Fig. 13 is a vertical section taken on line 13- 13of Fig. 12. i

Fig. 14 is a planview of another modification;

Fig. 15 is anedge view in Fig. 14;

Fig. 16 is a view showing the device in vertical cross sectionillustrating the opera tion thereof on a lamp bulb; and Fig. 17 ispartial perspectiveview of another modified form of the'device Referringto thedrawings. Fig, 2 shows a plan view of one form of the devicecomprising a tool 15 of circular form and made of the device shown fromplate material. This tool has a central opening therethroughsubstantially circular,

in outline and said opening has formed on 1ts edge and DI'016CtlI1gtherefrom, a'plurality of teeth 15. These teeth are preferably,

as shown in Fig. 3, bent out of the plane of the plate or tool. adjacentteeth being bent in opposite directions. r 7

In Figs l and 5 another form of a tool 17 is shown, substantially thesame that shown in Figs. 2 and 3, except that the teeth 17 thereon arenot oppositely bent as shown in In operatlon the lampbulb 16, which maybe of the shape shown in Figs. 1 and 16, is

vertical section of the I placed in the opening in the tool 17 imtil thesharp ends of the teeth 17 engage the bulb. The bulb is thus centered inthe tool and may be held by the fingers of one hand while the tool isheld by theother. Relative motion such as rotation is then given to thetool and bulb and the teeth 17 will cut the coating present on the bulbaway so that aclear strip or zone 1G will be made on the bulb 16. Thetool 17 may also be tilted or moved otherwise relatively to the bulb 16to make other marks or designs on the bulb. It will be obvious that theoperation of the tool 15 will be the same as already described for tool17 In Figs. 6 and 7 another form of the device 18 is shown, also madefrom a date which is substantially circular in shape,liutwhich has thelobes 18 formed on its periphery which it may be more easily held andturned. The member 18 also has an opening therethrough substantiallycentrally thereof, and from the inner edge of this opening a pluralityof cireumferentially spaced recess 18 extend outwardly. A plurality ofteeth 18 are also formed on the edge of the opening in member 18 andproject inwardly toward said opening. said teeth also beingcircumferentially spaced and disposed respectively between the recesses18!. As shown in Fig. 6, there are two teeth 18 between each recess 18.In Fig. 8, another device 19 is shown, very similar to the device shownin Fig. 6 and having the lobes 19 on its periphery. which device alsohas the central opening therein. he member 19 also has formed in theedge of said opening the cireumferentlally spaced recesses 19 betweenwhich are the groups of teeth 19 As shown in Fig. 8, there are threeteeth between each of the recesses 19". The teeth 18 in the member 18 orthe teeth 19' in the member 19, may be disposed in one plane, or thesame may be offset as shown in Fig. 3.

The operation of the devices shown in Figs. 6, 7 and 8 is similar tothat alreadydescribed in connection with devices 15 and 17 It may benoted that by having the teeth circumferentially spaced about the edgeoi? the opening, the lamp bulb is engaged on all sides and is thusevenly supported With this structure there is little danger of breakingthe lamps. It is particularly necessary to thus support the bulb as thesmall Christmas tree lights are made of ver i thin glass and are apt tobe broken by little pressure.

In Fig. 9 another form of the device is shown, comprising a member 20also formed from plate material and being of substantially circular formwith the scallops 20* on its periphery. The member 20 has an openingtherethrough and the recesses '20 are formed in the edge of this openingextending outwardly therein. Said recesses 201 are circumferential-1yspaced at one side of the opening and a plurality of teeth 20 are formedadjacent each other at the opposite side of the opening, said teethprojecting inwardly. The edge between the recesses 20" is smooth andcircular in form and substantially concentric with the inner edges ofthe teeth 20.

In the operation of the device shown in Fig. 9, the lamp will beinserted as shown in Fig. 16. One side of the lamp will be supported onthe edge between the recesses 20" and also on the portions oi the edgeat the sides of the recesses 20" toward the teeth 20 The scallops 20" all" ord a gr pping means for the fingers and as the lamp bulb and toolare relatively rotated the bulb will be supported upon three sides bythe smooth edge of the opening and will be engaged on the other side bythe teeth 20" which will scratch or.

cut the desired marks thereon.

In Fig. 10 another member 21 is shown also of circular form and madefrom plate mate rial. The member 21 has a central opening therein shownas substantially circular in form and a plurality of small cutters 22are disposed about this opening. The cutters 22 are shown as in the formof small cutting wheels having sharpened or beveled edges 22. Thecutting tools 22 are each journalcd on a small pivot 23 cxtcndii'igaxiallv thcrethrough and riveted to douunvam ly bent lugs 21" so thatthe axis of said pivot and the plane of said cutters are inclined to theplane of the plate 21. It will be noted that the cutters 22 extend intothe opening in the plate 21.

In operation the bulb 16 will be placed in the opening in member 21 andwill be engaged by the cutters Upon relative rotation of the bulb andmember 21, the cutters 22 will cut the mark in the bulb. Owing, to theinclination of the tools 22 there will be quite a portion of the surfacethereof which will contact the bulb operated upon.

In Figs. 12 and 13 a tool 27 is shown, comprising a circular platehaving a central circular opening therein and having circumfercntiallyspaced recesses 27 extending outwardly from the edge thereof. The edgesof the recesses are turned at right angles to the plate 27 to form cars27" and a small circular disk tool or cutter 28 is pivoted on a pivot 29between each pair of the cars 27".

In operation the lamp bulb will be placed as already described in theopening in the tool 27 and upon relative movement of said tool and lampbulb and the mark or design will be cut or scraped thereon by the tools28.

In Figs. 14C and 15, a somewhat different form of the device is shown,com rising a member 26 made from plate materia ,and circular in form.The member 26 has a central circularopening theretln'ough. and aplurality of circinnferentially spaced teeth 26 project inwardly fromthe edge of said opening. The teeth 26 are inclined somewhat to theradius extending from the center of the opening to the center of thebase of each tooth, said teeth being shown as having short straightcutting edgesinclined slightly to the tangent of a circle away thecoating of the lamp and formthe marking or design thereon.

In Fig. 17 another form of the device is shown, comprising a cylindricalmember 24 which may be tapered toward one end and which has thecircumferentially spaced teeth 24 at its end bent inwardly so as toextend across the end of the member 24.

In operation the bulb 16 will be placedin the end of the member 24 andupon relative rotation of said member and bulb the desired designs maybe cut in the bulb.

In Fig. 1 the bulb 16is shown in its operative relation to the reflector25. The inner side of the reflector will have a highly polished and highreflecting surface. \Vhen the bulb 16 is illuminated, the light from thezone 16 will shine outwardly and form an illuminated circular zone onthe reflector. It the forward portion of the bulb 16 is colored, thezone 16 may be clear and with a colored reflector a plurality of coloreffects are thus obtained.

From the above description it is seen that applicant. has provided avery simple, inexpensive and easily operated device for producing themarkings on the lamp bulbs. The device has been amply demonstrated inactual practice andfound to be very successful and efficient.

It will,of course, be understood that various changes may be made in theform, details, arrangement and proportions of the parts, withoutdeparting from the scope of applicants invention, which, generallystated, consists in a device capable of carrying out the objects aboveset forth, in the novel arts and combinations of arts disclosed anddefined in the appended c aims.

What is claimed is i 1. A device for marking colored electric lamp bulbscomprising a tool having an opening therein, and a plurality of spacedcutting members disposed about the inner edge of said opening andprojecting thereinto, where- 'by said lamp bulb may be placed in saidopening and said tool and bulb relatively moved to mark said bulb.

2. A device for marking electric lamp bulbs comprising. a tool formed asa disk having a substantially circular opening therethrough, a pluralityof circumferentially spaced teeth projecting into said opening from theedge thereof, adjacent ones of said teeth being offset in oppositedirections from the planeof said plate whereby a lamp bulb may beinserted in said opening and marked by relative movement of the sameandsaid tool.

3. A device for marking electric lamp bulbs comprising a tool made ofplate material having anopening therethrough, the edge of saidopeninghaving a plurality of circumferentially spaced recesses formed therein,a plurality of circumferentially spaced teeth projecting inwardly fromsaid edge and disposed respectively between said recesses.

4. A device for marking electric lamp bulbs comprisinga tool formed as adisk having a substantially circular opening therethrough, a pluralityof circumferentially spaced cutting means projecting into said openingfrom the edge thereof, whereby said, lamp bulb may be placed in saidopening and said tool and bulb relatively moved to mark said bulb; V

5. A device for marking lamp bulbs having in combination, a plurality ofcircumferentially spaced cutting members having cutting edges disposedsubstantially in the circumference of a circle and means to which saidcutters are connected and by which they are supported, thecutters beingpositioned to receive a lamp bulb therebetween and to be turnedrelatively thereto.

In testimony whereof I aflix my signature.

LAMBERT, L. RAYMOND.

